请问一下 Laravel 的 config 是怎么实现的？

protected function getConfigurationFiles(Application $app)
    {
        $files = [];

        $configPath = realpath($app->configPath());

        foreach (Finder::create()->files()->name('*.php')->in($configPath) as $file) {
            $directory = $this->getNestedDirectory($file, $configPath);

            $files[$directory.basename($file->getRealPath(), '.php')] = $file->getRealPath();
        }

        return $files;
    }Copy